Equations As Functions Quiz

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Given that y = x + 3

Find the value of y when x = - 2

• -1

• 1

• 5

• -5

If y = 4x + 5, what does y equal when x is 4?

• 21

• -11

• -31

• 25

Evaluate y = 4x - 1 when y = 19.

• 39
• 41
• 5
• 38

Find the range of the function y = 10x + 7 when the domain is {-1, 0, 1}.

• {-3, 7, 17}

• {3, 0, 10}

• {-7, 7, 17}

• {0, 1, 2}

Find the range of the function y = 7x - 1 when the domain is {-1, 0, 1}

• {1, 6, 8}
• {-8, -1, 6}
• {-8, -6, 0}

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5

Dog     Legs
1           4
2           8
5          20
10        40
Which statement is true?

• The number of legs times four equals the number of dogs
• The number of dogs times 4 equals the number of legs
• The number of dogs divided by 4 equals the number of legs
• Not here.

Fill in the missing value.

• 14
• 17
• -16
• 0

Fill in the missing value.

• -600
• 0
• 300
• -300